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Studies of Gold Adsorption from Chloride Media

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dc.contributor.authorAKTAŞ, SERDAR
dc.contributor.authorsMorcali, Mehmet Hakan; Zeytuncu, Bihter; Ozlem, Eda; Aktas, Serdar
dc.date.accessioned2022-03-14T11:02:33Z
dc.date.available2022-03-14T11:02:33Z
dc.date.issued2015-06
dc.description.abstractIn this paper, adsorption of gold from chloride media using commercial sorbent (Lewatit TP 214 (L-214)) and biomass residue (rice hull (RH)) were investigated. The different adsorption parameters, sorbent dosage, contact time, temperature and pH of solution on adsorption (%) were studied in detail on a batch sorption. Before the RH was activated, adsorption (%) was poor compared with L-214. However, after the RH was activated at 1000 degrees C under an argon atmosphere, the gold adsorption (%) increased four-fold. X-ray fluorescence (XRF) was used to explore the feasibility this material as an adsorbent for the removal of gold from aqueous solutions. The adsorption equilibrium data were best fitted with the Langmuir isotherm model. The maximum adsorption capacities, Q(max), at 25 degrees C were found to be 93.46 and 108.70 mg/g for the activated rice hull (ARH) and L-214, respectively. Thermodynamic calculations using Delta H degrees, Delta S degrees, Delta G degrees and E-a values indicate that the adsorption process was spontaneous and endothermic.
dc.identifier.doi10.1590/1516-1439.005715
dc.identifier.eissn1980-5373
dc.identifier.issn1516-1439
dc.identifier.urihttps://hdl.handle.net/11424/245779
dc.identifier.wosWOS:000359780700030
dc.language.isoeng
dc.publisherUNIV FED SAO CARLOS, DEPT ENGENHARIA MATERIALS
dc.relation.ispartofMATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectadsorption
dc.subjectactivated carbon
dc.subjectchloride solution
dc.subjectwaste recovery
dc.subjectRICE HUSK ASH
dc.subjectAQUEOUS-SOLUTIONS
dc.subjectGOLD(III)
dc.subjectEXTRACTION
dc.subjectBIOSORPTION
dc.subjectKINETICS
dc.subjectCARBON
dc.titleStudies of Gold Adsorption from Chloride Media
dc.typearticle
dspace.entity.typePublication
local.avesis.ida47ca45e-d3ca-4ddb-882a-71c5cc474cfa
local.import.packageSS16
local.indexed.atWOS
local.indexed.atSCOPUS
local.journal.numberofpages8
oaire.citation.endPage667
oaire.citation.issue3
oaire.citation.startPage660
oaire.citation.titleMATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
oaire.citation.volume18
relation.isAuthorOfPublication46159ed0-7c30-4490-a7db-8149b83bce7c
relation.isAuthorOfPublication.latestForDiscovery46159ed0-7c30-4490-a7db-8149b83bce7c

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